Variables in array from fetch become zeros on return from function with promise

Issue

I have a function to get an array of some data from server:

async GetResolutionsAsync(signal: AbortSignal): Promise<BaseReference[]> {
    var resp = await fetch(`api/Improvements/GetResolutions`, {
        signal: signal
    })

    if (resp.status >= 400)
        throw new Error(`[ImprovementsDbHandler GetResolutionsAsync]: ${await resp.text()}`)

    const data = await resp.json() as BaseReference[]
    return data
}

My BaseReference type:

export type BaseReference = {
    id: number;
    name: string;
}

But I get 0 values in id variables after await resp.json()

(8) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
0: {id: 0, name: 'К реализации'}
1: {id: 0, name: 'На доработку'}
2: {id: 0, name: 'На перспективу'}
3: {id: 0, name: 'На рассмотрение ТС1'}
4: {id: 0, name: 'На рассмотрение ТС2'}
5: {id: 0, name: 'На рассмотрение ТС3'}
6: {id: 0, name: 'Отклонено'}
7: {id: 0, name: 'Не выбрано'}
length: 8

But the thing is, when I'm not putting data variable in return, everything works as intended. For example:

const data = await resp.json() as BaseReference[]

console.log(data)

return []

Console log:

(8) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
0: {id: 1, name: 'К реализации'}
1: {id: 2, name: 'На доработку'}
2: {id: 3, name: 'На перспективу'}
3: {id: 4, name: 'На рассмотрение ТС1'}
4: {id: 5, name: 'На рассмотрение ТС2'}
5: {id: 6, name: 'На рассмотрение ТС3'}
6: {id: 7, name: 'Отклонено'}
7: {id: 0, name: 'Не выбрано'}
length: 8

I have a lot of the same functions to get other arrays of data, but all of them return the requested values, what can be wrong here?

Solution

As the commentators said, somehow and somewhere the data is changing, I suppose, because I couldn't find the possibilities for these changes since the only thing I am doing with this array is setting it into state to use as certain dictionary. So now I am creating a copy of the array to put it to state, and the problem seems to be solved:

iHandler.GetResolutionsAsync(controller.signal).then((resolutionsToSet) => {
    var newResolutions = JSON.parse(JSON.stringify(resolutionsToSet))
    setResolutions(newResolutions);
                                  
}).catch((error) => { setLoading(false); errorHandler(error, "[GetResolutionsAsync]") })

Answered By - Quribe